additive genetic variance

简明释义

加性遗传方差

英英释义

例句

1.The additive genetic variance 加性遗传方差 contributes to the heritability of traits.

在性状的遗传力中，加性遗传方差起着重要作用。

2.Understanding additive genetic variance 加性遗传方差 is crucial for breeding programs.

理解加性遗传方差对育种计划至关重要。

3.Researchers found that the additive genetic variance 加性遗传方差 for milk production was significantly high.

研究人员发现，牛奶生产的加性遗传方差显著较高。

4.In plant breeding, maximizing additive genetic variance 加性遗传方差 can lead to better crop yields.

在植物育种中，最大化加性遗传方差可以提高作物产量。

5.The study aimed to estimate the additive genetic variance 加性遗传方差 in a population of dairy cattle.

该研究旨在估计一群奶牛中的加性遗传方差。

作文

Understanding the concept of additive genetic variance is crucial for anyone interested in genetics and its applications in fields like agriculture, medicine, and evolutionary biology. additive genetic variance refers to the portion of genetic variance that contributes to the phenotypic variation of a trait in a population due to the additive effects of alleles. This means that the effects of individual alleles accumulate, leading to observable differences among individuals. For example, if we consider a trait such as height in plants, the contribution of each allele can be summed to predict the overall height of a plant based on its genotype.The significance of additive genetic variance lies in its implications for breeding programs and natural selection. In agricultural settings, breeders often seek to enhance desirable traits, such as yield or disease resistance, by selecting parent plants with favorable genotypes. By understanding the additive genetic variance, breeders can make informed decisions about which plants to cross, thus maximizing the potential for offspring that exhibit superior traits. This approach is particularly effective because traits influenced by additive genetic variance tend to respond well to selection, allowing for predictable outcomes.In contrast, traits influenced by non-additive genetic variance, such as dominance and epistasis, may not respond as predictably to selection. This distinction highlights the importance of quantifying additive genetic variance in any breeding strategy. Moreover, in the context of evolutionary biology, additive genetic variance plays a vital role in understanding how populations adapt to changing environments. Populations with higher levels of additive genetic variance are often more resilient, as they possess a wider range of genetic options to draw upon in response to selective pressures.Furthermore, the study of additive genetic variance extends beyond agriculture and evolution; it is also pertinent in human health research. For instance, understanding the additive genetic variance associated with complex diseases, such as diabetes or heart disease, can aid in identifying genetic risk factors. This knowledge can lead to better prevention strategies and personalized treatment plans based on an individual's genetic makeup.In conclusion, additive genetic variance is a fundamental concept in genetics that has far-reaching implications across various domains. Its role in shaping phenotypic traits, guiding breeding practices, influencing evolutionary processes, and informing health research underscores its importance. As we continue to explore the intricacies of genetics, a thorough understanding of additive genetic variance will be essential for harnessing the power of genetics to improve crops, enhance health outcomes, and understand the biological diversity of life on Earth.

理解加性遗传方差的概念对于任何对遗传学及其在农业、医学和进化生物学等领域的应用感兴趣的人来说都是至关重要的。加性遗传方差是指由于等位基因的加性效应而导致种群中某一性状表型变异的遗传方差部分。这意味着个别等位基因的效应会累积，从而导致个体之间的可观察差异。例如，如果我们考虑植物的高度这一性状，每个等位基因的贡献可以相加，以预测植物的整体高度，基于其基因型。加性遗传方差的重要性在于其对育种计划和自然选择的影响。在农业环境中，育种者通常寻求通过选择具有有利基因型的亲本植物来增强期望的性状，例如产量或抗病能力。通过理解加性遗传方差，育种者可以做出明智的决定，选择哪些植物进行交配，从而最大化后代表现出优越性状的潜力。这种方法特别有效，因为受加性遗传方差影响的性状往往对选择反应良好，允许可预测的结果。相比之下，受非加性遗传方差（如显性和基因间相互作用）影响的性状可能不会对选择作出如此可预测的反应。这一区别突显了在任何育种策略中量化加性遗传方差的重要性。此外，在进化生物学的背景下，加性遗传方差在理解种群如何适应变化的环境方面发挥着至关重要的作用。具有较高水平加性遗传方差的种群通常更具韧性，因为它们拥有更广泛的遗传选项以应对选择压力。此外，研究加性遗传方差的范围不仅限于农业和进化；它在人体健康研究中也同样相关。例如，了解与复杂疾病（如糖尿病或心脏病）相关的加性遗传方差可以帮助识别遗传风险因素。这些知识可以导致更好的预防策略和基于个体遗传构成的个性化治疗计划。总之，加性遗传方差是遗传学中的一个基本概念，在各个领域具有深远的影响。它在塑造表型性状、指导育种实践、影响进化过程和提供健康研究信息方面的作用，突显了其重要性。随着我们继续探索遗传学的复杂性，深入理解加性遗传方差将对利用遗传学的力量来改善作物、增强健康结果以及理解地球生命的生物多样性至关重要。